Shortly after 6am on Saturday, emergency crews were called to the scene on the Olympic Highway near Henty, where a 40-year-old driver was injured in an accident.

Brett and Jacob Harris, from Yenda, had no hesitation in jumping out to help when they came across the site.

"We came across this accident at about 5.45am and my son, Jacob, was behind me in another car," Brett said.

"There was another truck driver first onsite, and he said to us that the driver was still in the cab.

"It was pretty smashed up, and there was a small fire at the back right-hand wheel."

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The driver was stuck but conscious, so the duo tried to put out the flames with bottles of water and a small fire extinguisher.

"That was not working, so we knew we had to get the driver out," Brett said.

"We tried to gain access to the cab by the driver's door, but it was damaged.

"My son being the four-wheel-drive enthusiast that he is, he has also done Rural Fire Service training, he thought to snatch the door off with his ute and snatch strap."

Jacob raced to where his ute was parked and immediately got to work to pull the door off.

"We hooked it up with the snatch strap, and after a few attempts, we busted it open," Brett said.

"Another guy had jumped in on the passenger side of the truck and talking to the driver to reassure him. By this stage, the truck was well alight."

After the door was open, the father, son and some other bystanders freed the driver who appeared to have deep lacerations to his right leg, which also looked like it could be broken.

Emergency services still had not arrived.

"Within less than two minutes of getting the driver out, the whole truck was engulfed in flames," Brett said.

"I was extremely proud of Jacob, who was quick-thinking on the spot.

"I think it is safe to say if we had not gotten him out, the driver would have been badly burned."

Brett said he would encourage all drivers, particularly those heading out to remote areas, to pack the car with necessary equipment such as a snatch strap and fire extinguisher.

Paramedics conveyed the driver by road to Albury Base Hospital.

On Saturday, The Daily Advertiser was told the incident is not believed to have involved any other vehicles and police will continue to investigate the cause of the crash.